private static void AddInterfaces(Type[] interfaces, Java.Util.ISet<Type> ret, Java.Util.IQueue<Type> toVisit)
{
foreach (var i in interfaces)
{
if (i == typeof(IGenericTypeDefinition))
continue; // hide this marker interface.
if (!ret.Contains(i))
{
ret.Add(i);
toVisit.Add(i);
}
}
}
